Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

For More Weather Information:

Key West, FL Local Forecast Office

3NM SSW Alligator Reef Light FL

Marine Point Forecast

[NOTICE]

Overnight
Low: 76 °F
SSW 10kt
1ft
Monday
High: 81 °F
W 15kt
1-2ft
Monday Night
Low: 71 °F
NNE 15kt
2ft
Tuesday
High: 76 °F
NNE 15kt
2-3ft
Tuesday Night
Low: 72 °F
ENE 15kt
3ft
Wednesday
High: 77 °F
E 10kt
2-3ft
Wednesday Night
Low: 69 °F
N 10kt
2ft
Thursday
High: 76 °F
N 10kt
1ft
Thursday Night
Low: 71 °F
NE 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:15 pm CST Dec 7, 2025
Forecast Valid: 12am CST Dec 8, 2025-6pm CST Dec 14, 2025

View Nearby Observations

Detailed Forecast

Overnight

SSW wind around 10 kt. Isolated showers and thunderstorms. Seas around 1 ft.

Monday

WSW wind 10 to 15 kt becoming WNW in the afternoon. Scattered showers and thunderstorms. Seas 1 to 2 ft.

Monday Night

NW wind 10 to 15 kt becoming NNE after midnight. Scattered showers. Seas around 2 ft.

Tuesday

NNE wind around 15 kt. Scattered showers. Seas 2 to 3 ft.

Tuesday Night

ENE wind 10 to 15 kt. Scattered showers. Seas around 3 ft.

Wednesday

E wind 5 to 10 kt. Scattered showers. Seas 2 to 3 ft.

Wednesday Night

NE wind 5 to 10 kt becoming N after midnight. Isolated showers. Seas around 2 ft.

Thursday

N wind around 10 kt. Isolated showers. Seas around 1 ft.

Thursday Night

NE wind around 10 kt. Isolated showers. Seas around 1 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.